FILE PHOTO: Vials labelled "COVID-19 Coronavirus Vaccine" and sryinge are seen in front of displayed Novavax logo in this illustration taken, February 9, 2021. REUTERS/Dado Ruvic/Illustration/File Photo
(Reuters) - Novavax Inc said on Monday participants in its ongoing COVID-19 vaccine trials in South Africa and the UK can now receive additional shots, ensuring those who received a placebo can also get the active vaccine.
Allowing volunteers to crossover to the active vaccine offers them an incentive to continue in the trials even when other authorized vaccines are available.
